strongback

noun

1

: a spar lashed from one boat davit to the other to which the boat is secured at sea

2

: a heavy timber or metal beam or bar for taking a strain

specifically : a post to support a light deck used by passengers

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!